import java.util.Scanner;

public class 九九乘法表 {
    public static void main(String[] args) {
        Scanner scan=new Scanner(System.in);
        /*for(int i =1;i <= 9; i++  ){
            for(int j = 1; j <= i; j++)
                System.out.print(j + "*" +i +"=" +(i * j)+"");
                System.out.println("");
            }*/
        /*for(int j = 0;j<5;j++){
            for(int i =0 ;i<8;i++)
                System.out.print("*");
            System.out.println("");
        }*/
        /*for(int i = 0;i<6;i++){
            for(int j=1;j<=i*2-1;j++)
                System.out.print("*");
            System.out.println(" ");
        }*/
        /*for(int i =1;i<6;i++)
        {for(int k =1;k<=11-i;k++)
            System.out.print(" ");
            for(int j =1;j<=i*2-1;j++)
                System.out.print("*"); }

            {System.out.println(" ");
            System.out.println("     |   |");
            System.out.println("     |   |");
        }*/
        /*int s = 0;
        for(int i=1;i<=100;i++)
            s = s+i;*/
       /* int s = 0; int i= 1;
        while (i<=100){
            s = s+i;
            i++;

        }*/
        int s =0; int i = 1;
        do {
            s =s+i;
            i++;

        }while (i <=100);
    }}

